[comp.sys.mac] Mac II memory speed

cosmos@druhi.ATT.COM (GuestRA) (03/01/88)

We recently had occasion to open a Mac II that we have to add some memory to
it.  To our surprise, about half of the SIMMS were 150ns instead of the
120ns we have been told is required by the Mac II.  This machine was direct
from our dealer (authorized and all that).  We called the guy up and he said
they have been mixing them and never heard of any problems.  Since we design
processor and memory for a living, we were a little distressed.  We don't
like memories that work %95 of the time (only at certain temperatures, etc).
I called our Apple rep directly, without at first telling him what the story
was, and he insisted you should only be using 120ns SIMMS.  Has anyone else
had this happen?  Was Apple super ultra conservative on their memory spec?
The Apple guy called our dealer to have a chat.  No resolution yet, but our
feeling is they owe us the faster SIMMS.

Ronald A. Guest, Supervisor     ...!ihnp4!druhi!cosmos
AT&T Laboratories               <--- but these are my thoughts, not theirs
12110 N. Pecos St.              Denver, Colorado 80234          (303) 538-4896